How to write a contact letter to recover money?

Debtor xxxx:?

According to the stipulations in the xxX contract signed by you and me on XX, XX, XX, XX, you should pay us the contract price of RMB X.

However, as of X, X, X, you have not paid us the sum.

In view of the hard-won cooperation between us, we hope you can pay this amount before X, X, X, X?

I am writing to inform you.

Shunzhu

Shang Qi

Creditor: XXX

X year x month x day

* Note:

The contract problem can be made clear in a few words.

Changing punctuation marks can make you rich and poor.

If you are really responsible for yourself, entrust a lawyer to draft or review.

If you are not afraid to dig a hole for yourself and dare to joke about your life, then go online and make a "template" casually.